How Many Fluid Ounces Are in a Cup?

1 Cup = 8 Fluid Ounces

There are 8 fluid ounces in one cup.

These are US customary measures, the standard in American recipes. An imperial cup (UK, pre-metric) is 284 mL and an imperial pint is 20 fluid ounces, so a recipe written in imperial units will not match these numbers.

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Recent: 1 Cup = 8 Fluid Ounce

How to convert How Many Fluid Ounces Are in a Cup?

  1. 1Start with the conversion formula: fl oz = cup × 8
  2. 2Substitute the value: fl oz = 1 × 8
  3. 3That gives the result: 1 Cup = 8 Fluid Ounces

Cups to Fluid Ounces table

Cups (cup) Fluid Ounces (fl oz)
1 8
2 16
3 24
4 32
5 40
6 48
7 56
8 64
9 72
10 80
12 96
16 128
20 160
24 192

Unit definitions

Cup (cup)
The Cup (cup) is a unit of volume equal to 236.588 Milliliters.
Fluid Ounce (fl oz)
The Fluid Ounce (fl oz) is a unit of volume equal to 29.5735 Milliliters.

Frequently asked questions

How many fluid ounces are in a cup?
There are 8 fluid ounces in one cup.
How many fluid ounces are in 2 cups?
2 cups contain 16 fluid ounces.
How many cups are in a fluid ounce?
One fluid ounce is 0.125 cups, the inverse of this conversion.
Do these numbers apply to imperial measures too?
These are US customary measures, the standard in American recipes. An imperial cup (UK, pre-metric) is 284 mL and an imperial pint is 20 fluid ounces, so a recipe written in imperial units will not match these numbers.

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